self on audio the collected audio design articles of douglas self

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Self On Audio

Author : Douglas Self
ISBN : 9781317520955
Genre : Technology & Engineering
File Size : 66. 6 MB
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Self on Audio: The collected audio design articles of Douglas Self, Third Edition is the most comprehensive collection of significant articles in the technical audio press. This third edition features 45 articles that first appeared in Elektor, Linear Audio, and Electronics World. Including expanded prefaces for each article, the author provides background information and circuit commentary. The articles cover both discrete and opamp preamplifier design, mixing console design, and power amplifier design. The preamplifier designs are illuminated by the very latest research on low noise and RIAA equalization. The famous series of 1993 articles on power amplifier distortion is included, with an extensive commentary reflecting the latest research on compensation and ultra-low distortion techniques. This book addresses the widened scope of technology that has become available to the audio designer over the last 35 years. New materials include: Prefaces that explain the historical background of the articles, why they were written, and the best use of the technology of the day Extensive details, including schematics, of designs that preceded or followed the design in each article, giving an enormous amount of extra information and a comprehensive overview of how author's design approaches have evolved New directions for the technology, describing new lines of thought such as curvilinear Class-A

Small Signal Audio Design

Author : Douglas Self
ISBN : 9781134635207
Genre : Technology & Engineering
File Size : 49. 92 MB
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Learn to use inexpensive and readily available parts to obtain state-of-the-art performance in all the vital parameters of noise, distortion, crosstalk and so on. With ample coverage of preamplifiers and mixers and a new chapter on headphone amplifiers, this practical handbook provides an extensive repertoire of circuits that can be put together to make almost any type of audio system. A resource packed full of valuable information, with virtually every page revealing nuggets of specialized knowledge not found elsewhere. Essential points of theory that bear on practical performance are lucidly and thoroughly explained, with the mathematics kept to a relative minimum. Douglas' background in design for manufacture ensures he keeps a wary eye on the cost of things. Includes a chapter on power-supplies, full of practical ways to keep both the ripple and the cost down, showing how to power everything. Douglas wears his learning lightly, and this book features the engaging prose style familiar to readers of his other books. You will learn why mercury cables are not a good idea, the pitfalls of plating gold on copper, and what quotes from Star Trek have to do with PCB design. Learn how to: make amplifiers with apparently impossibly low noise design discrete circuitry that can handle enormous signals with vanishingly low distortion use humble low-gain transistors to make an amplifier with an input impedance of more than 50 Megohms transform the performance of low-cost-opamps, how to make filters with very low noise and distortion make incredibly accurate volume controls make a huge variety of audio equalisers make magnetic cartridge preamplifiers that have noise so low it is limited by basic physics sum, switch, clip, compress, and route audio signals The second edition is expanded throughout (with added information on new ADCs and DACs, microcontrollers, more coverage of discrete op amp design, and many other topics), and includes a completely new chapter on headphone amplifiers.

Audio Power Amplifier Design Handbook

Author : Douglas Self
ISBN : 9781136123658
Genre : Technology & Engineering
File Size : 28. 3 MB
Format : PDF
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This book is essential for audio power amplifier designers and engineers for one simple reason...it enables you as a professional to develop reliable, high-performance circuits. The Author Douglas Self covers the major issues of distortion and linearity, power supplies, overload, DC-protection and reactive loading. He also tackles unusual forms of compensation and distortion produced by capacitors and fuses. This completely updated fifth edition includes four NEW chapters including one on The XD Principle, invented by the author, and used by Cambridge Audio. Crosstalk, power amplifier input systems, and microcontrollers in amplifiers are also now discussed in this fifth edition, making this book a must-have for audio power amplifier professionals and audiophiles.

The Design Of Active Crossovers

Author : Douglas Self
ISBN : 9781136111891
Genre : Technology & Engineering
File Size : 21. 20 MB
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The Design of Active Crossovers is a unique guide to the design of high-quality circuitry for splitting audio frequencies into separate bands and directing them to different loudspeaker drive units specifically designed for handling their own range of frequencies. Traditionally this has been done by using passive crossover units built into the loudspeaker boxes; this is the simplest solution, but it is also a bundle of compromises. The high cost of passive crossover components, and the power losses in them, means that passive crossovers have to use relatively few parts. This limits how well the crossover can do its basic job. Active crossovers, sometimes called electronic crossovers, tackle the problem in a much more sophisticated manner. The division of the audio into bands is performed at low signal levels, before the power amplifiers, where it can be done with much greater precision. Very sophisticated filtering and response-shaping networks can be built at comparatively low cost. Time-delay networks that compensate for phyical misalignments in speaker construction can be implemented easily; the equivalent in a passive crossover is impractical because of the large cost and the heavy signal losses. Active crossover technology is also directly applicable to other band-splitting signal-processing devices such as multi-band compressors. The use of active crossovers is increasing. They are used by almost every sound reinforcement system, by almost every recording studio monitoring set-up, and to a small but growing extent in domestic hifi. There is a growing acceptance in the hifi industry that multi-amplification using active crossovers is the obvious next step (and possibly the last big one) to getting the best possible sound. There is also a large usage of active crossovers in car audio, with the emphasis on routing the bass to enormous low-frequency loudspeakers. One of the very few drawbacks to using the active crossover approach is that it requires more power amplifiers; these have often been built into the loudspeaker, along with the crossover, and this deprives the customer of the chance to choose their own amplifier, leading to resistance to the whole active crossover philosophy. A comprehensive proposal for solving this problem is an important part of this book. The design of active crossovers is closely linked with that of the loudspeakers they drive. A chapter gives a concise but complete account of all the loudspeaker design issues that affect the associated active crossover. This book is packed full of valuable information, with virtually every page revealing nuggets of specialized knowledge never before published. Essential points of theory bearing on practical performance are lucidly and thoroughly explained, with the mathematics kept to an essential minimum. Douglas' background in design for manufacture ensures he keeps a wary eye on the cost of things. Features: Crossover basics and requirements The many different crossover types and how they work Design almost any kind of active filter with minimal mathematics Make crossover filters with very low noise and distortion Make high-performance time-delay filters that give a constant delay over a wide range of frequency Make a wide variety of audio equaliser stages: shelving, peaking and notch characteristics All about active crossover system design for optimal noise and dynamic range There is a large amount of new material that has never been published before. A few examples: using capacitance multipliers in biquad equalisers, opamp output biasing to reduce distortion, the design of NTMTM notch crossovers, the design of special filters for filler-driver crossovers, the use of mixed capacitors to reduce filter distortion, differentially elevated internal levels to reduce noise, and so on. Douglas wears his learning lightly, and this book features the engaging prose style familiar from his other books The Audio Power Amplifier Design Handbook, Self on Audio, and the recent Small Signal Audio Design.

Electronics For Vinyl

Author : Douglas Self
ISBN : 9781351784269
Genre : Technology & Engineering
File Size : 24. 70 MB
Format : PDF, ePub
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Electronics for Vinyl is the most comprehensive book ever produced on the electronic circuitry needed to extract the best possible signal from grooves in vinyl. What is called the "vinyl revival" is in full swing, and a clear and comprehensive account of the electronics you need is very timely. Vinyl reproduction presents some unique technical challenges; the signal levels from moving-magnet cartridges are low, and those from moving-coil cartridges lower still, so a good deal of high-quality low-noise amplification is required. Some of the features of Electronics for Vinyl include: ? integrating phono amplifiers into a complete preamplifier; ? differing phono amplifier technologies; covering active, passive, and semi-passive RIAA equalisation and transconductance RIAA stages; ? the tricky business of getting really accurate RIAA equalisation without spending a fortune on expensive components, such as switched-gain MM/MC RIAA amplifiers that retain great accuracy at all gains, the effects of finite open-loop gain, cartridge-preamplifier interaction, and so on; ? noise and distortion in phono amplifiers, covering BJTs, FETs, and opamps as input devices, hybrid phono amplifiers, noise in balanced MM inputs, noise weighting, and cartridge load synthesis for ultimately low noise; ? archival and non-standard equalisation for 78s etc.; ? building phono amplifiers with discrete transistors; ? subsonic filtering, covering all-pole filters, elliptical filters, and suppression of subsonics by low-frequency crossfeed, including the unique Devinyliser concept; ? ultrasonic and scratch filtering, including a variety of variable-slope scratch filters; ? line output technology, including zero-impedance outputs, on level indication for optimal setup, and on specialised power supplies; and ? description of six practical projects which range from the simple to the highly sophisticated, but all give exceptional performance. Electronics for Vinyl brings the welcome news that there is simply no need to spend huge sums of money to get performance that is within a hair’s breadth of the best theoretically obtainable. But you do need some specialised knowledge, and here it is.

Audio Culture Revised Edition

Author : Christoph Cox
ISBN : 9781501318375
Genre : Social Science
File Size : 61. 81 MB
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The groundbreaking Audio Culture: Readings in Modern Music (Continuum; September 2004; paperback original) maps the aural and discursive terrain of vanguard music today. Rather than offering a history of contemporary music, Audio Culture traces the genealogy of current musical practices and theoretical concerns, drawing lines of connection between recent musical production and earlier moments of sonic experimentation. It aims to foreground the various rewirings of musical composition and performance that have taken place in the past few decades and to provide a critical and theoretical language for this new audio culture. This new and expanded edition of the Audio Culture contains twenty-five additional essays, including four newly-commissioned pieces. Taken as a whole, the book explores the interconnections among such forms as minimalism, indeterminacy, musique concrète, free improvisation, experimental music, avant-rock, dub reggae, ambient music, hip hop, and techno via writings by philosophers, cultural theorists, and composers. Instead of focusing on some "crossover" between "high art" and "popular culture," Audio Culture takes all these musics as experimental practices on par with, and linked to, one another. While cultural studies has tended to look at music (primarily popular music) from a sociological perspective, the concern here is philosophical, musical, and historical. Audio Culture includes writing by some of the most important musical thinkers of the past half-century, among them John Cage, Brian Eno, Ornette Coleman, Pauline Oliveros, Maryanne Amacher, Glenn Gould, Umberto Eco, Jacques Attali, Simon Reynolds, Eliane Radigue, David Toop, John Zorn, Karlheinz Stockhausen, and many others. Each essay has its own short introduction, helping the reader to place the essay within musical, historical, and conceptual contexts, and the volume concludes with a glossary, a timeline, and an extensive discography.

Transistor Circuit Techniques

Author : Gordon J. Ritchie
ISBN : 0748740759
Genre : Technology & Engineering
File Size : 52. 18 MB
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Thoroughly revised and updated, this highly successful textbook guides students through the analysis and design of transistor circuits. It covers a wide range of circuitry, both linear and switching. Transistor Circuit Techniques: Discrete and Integrated provides students with an overview of fundamental qualitative circuit operation, followed by an examination of analysis and design procedure. It incorporates worked problems and design examples to illustrate the concepts. This third edition includes two additional chapters on power amplifiers and power supplies, which further develop many of the circuit design techniques introduced in earlier chapters. Part of the Tutorial Guides in Electronic Engineering series, this book is intended for first and second year undergraduate courses. A complete text on its own, it offers the added advantage of being cross-referenced to other titles in the series. It is an ideal textbook for both students and instructors.

Food In The Social Order

Author : Mary Douglas
ISBN : 9781317833697
Genre : Social Science
File Size : 52. 87 MB
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First published in 1984, This work is a cross-cultural study of the moral and social meaning of food. It is a collection of articles by Douglas and her colleagues covering the food system of the Oglala Sioux, the food habits of families in rural North Carolina, meal formats in an Italian-American community near Philadelphia. It also includes a grid/group analysis of food consumption.

The Sound Of Silence

Author : Burkhard Vogel
ISBN : 3642197744
Genre : Technology & Engineering
File Size : 65. 29 MB
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There is a wide field of tasks left that can only be satisfyingly attacked with the help of old-fashioned analogue technology, and one of the most important are amplifiers for analogue signals. The strongly expanded content of the second edition of "the sound of silence" leads to affordable amplifier design approaches which will end up in lowest-noise solutions not far away from the edge of physical boundaries set by room temperature and given cartridges - thus, fully compatible with very expensive so called "high-end" or "state-of-the-art" offers on today markets - and, from a noise point of view in most cases outperforming them! With easy to follow mathematical treatment it is demonstrated as well that theory is not far away from reality. Measured SNs will be found within 1dB off the calculated ones and deviations from the exact amplifier transfer won't cross the ± 0.1dB tolerance lines. Additionally, the book presents measurement set-ups and results. Consequently, comparisons with measurement results of test magazine will soon become easier to perform. This new edition includes a new chapters about reference levels, Noise in Amp Input sections, Humming Problems, and much more.

The Salmon Of Doubt

Author : Douglas Adams
ISBN : 0345484495
Genre : Fiction
File Size : 48. 13 MB
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On Friday, May 11, 2001, the world mourned the untimely passing of Douglas Adams, beloved creator of The Hitchhiker’s Guide to the Galaxy, dead of a heart attack at age forty-nine. Thankfully, in addition to a magnificent literary legacy—which includes seven novels and three co-authored works of nonfiction—Douglas left us something more. The book you are about to enjoy was rescued from his four computers, culled from an archive of chapters from his long-awaited novel-in-progress, as well as his short stories, speeches, articles, interviews, and letters. In a way that none of his previous books could, The Salmon of Doubt provides the full, dazzling, laugh-out-loud experience of a journey through the galaxy as perceived by Douglas Adams. From a boy’s first love letter (to his favorite science fiction magazine) to the distinction of possessing a nose of heroic proportions; from climbing Kilimanjaro in a rhino costume to explaining why Americans can’t make a decent cup of tea; from lyrical tributes to the sublime pleasures found in music by Procol Harum, the Beatles, and Bach to the follies of his hopeless infatuation with technology; from fantastic, fictional forays into the private life of Genghis Khan to extended visits with Dirk Gently and Zaphod Beeblebrox: this is the vista from the elevated perch of one of the tallest, funniest, most brilliant, and most penetrating social critics and thinkers of our time. Welcome to the wonderful mind of Douglas Adams. From the Hardcover edition.

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